Improvement in connecting gages, calipers, and rules



H.' BUNDY.

Gage, Calipers, and Rule.

Patent ed Aug. 8, 1865.

UNITED STATES PATENT OFFICE.

NELSON H. BUNDY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND NAHUMM. DOW, OF SAME PLACE.

IMPROVEMENT IN CONNECTING GAGES, CALIPERS, AND RULES.

Specification forming part of Letters Patent No. 49,337, dated August 8,1865.

To all whom it may concern:

Be it known that I, NELsoN H. BUNDY, of Boston, in the county of Sufiolkand State of Massachusetts, have invented a new and Improved Combinationof Mechanics Instruments; and I do hereby declare that the following isa full and exact description thereof, reference being bad to theaccompan yin g drawings, and to the letters of reference marked thereon,making a part of this specification.

Figures 1 and 2 are side views of the instrument closed. Fig. 3 is alongitudinal section of the same. Fig. 4 is a transverse section of thesame. Fig. 5 is a view of the inside calipers ready for use. Fig. 6 is aview of the outside calipers. Fig. 7 is a view of the foot-rule, Stubbswire-gage, and center gage.

The letter A represents the instrument; I) I) b b the legs of thecalipers; a, the wire-gage d,the center-gage; e, the rule; f, thelargejoint of the instrument; 9 g, the large leg-joints; g g, therule-joints, respectively.

Similar letters in the different figures represent the same thing.

The nature of my invention consists in so combiningin a small compassthe above-named useful instruments in one instrument that it may becarried in the pocket with as little inconvenience as the pocket-knife,and still answer the purposes of each instrument equally as well as theseveral instruments separate. In fact, the invention combinesinstruments well known and indispensable to the mechanic and artisan,and also is of great general convenience to tradesmen, especially todealers in hardware; and in order to enable others to make and use myinvention, 1 will proceed to describe its construction and use.

This instrument may be made of German silver, steel, or any kind ofmetal suitable to produce the intended efiect, or of wood, or wood andmetal combined, or any material which will produce the intended efleet.

The calipers, either the inside or outside, as represented in Figs. 5and 6, extended for use, may be used as dividers in the place ofcompasses.

The washersof the joints of the instrument, as at the largejointf andthe leg-joints of the calipers g g and the rule-joints g g, may he madeplain or concave on the inside, as rep resented in Figs. 3 and 4. Theeffect of the concave washer, of course, is' to render the jointsstifi'er and keep the instrument better in position when in use.

The object and use ofeach instrument need not be explained, lia\ ingbeen long well known and used; but I will explain the method of puttingeach instrument in position for use: Take either Fig.1 or Fig. 2. Spreadthe instrnwent a little at the joints g g and g g. The points of thecalipers at fiinmediately appear. Open them and they will take theposition of the inside calipers, as seen at Fig. 5. Reyerse the legs, asseen at Fig. 5, and they will take the position of the outside calipers,as seen at Fig. 6. To use the wire and center gage, c and and d, takethe instrument closed, as at Fig. 1,

and spread a little at thejoints g g. The end of the gage appears, whichmay then be opened by the fingers like a pocket-knife. To prepare therule for use, spread the end of the instrument,Fig. 1, at g g, wideapart, leaving the part designated by g g, Fig. 2, stationary, and therule immediately opens, as seen at Fig. 7

What I claim as my invention, and desire to secure by Letters Patent,is-- The mode of connecting the several instrumentsviz., the calipers,wire-gage, and footrule-as hereinabove set forth.

NELSON H. BUN DY.

Witnesses: J. L. NEWTON,

E. T. '1ROTT.

